An application form on my site is automatically transcribed to an Excel file. It also outputs a summary with attachments to an email address on our domain. Do you know of any way get this application data more efficiently imported to Trello, in terms of cards with attachments and sorting information? I am currently doing this manually on a case-by-case basis.

If you see a question where you can post an identical answer - webapps.stackexchange.com/questions/28762 - then that's a good sign that the questions are duplicate. You should flag the second question as a duplicate of the first rather than answering.
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ChrisF♦Jul 17 '12 at 9:01